Electric-lamp socket.



J. G. PETERSON. ELECTRIO LAMP SOCKET. APPLICATION F-ILBD NOV. 3, 1909.

959,59& Patented May 31,1910.

fi y.4 Fay; 0 fi -W i I5 9 J X J g v3 I g j Wz'inessea: fnveniors- JOHANN G. PETERSON, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE ARROW ELECTRIC COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION 01E CONNEC- TICUT.

ELECTRIC-LAMP SOCKET.

Specification of Letters Patent.

censor.

llatented May 31, 1910.

Application filed November 3, 1909. Serial No. 525,982.

To aZZ whom it may concern:

Be it known that I, J OI-IANN G. Pn'rnnsoN, a citizen of the United States, residing at llartford, in the county of Hartford and State of Connecticut, have invented a new and useful improvement in Electric-Lam Sockets, of which the following is a specification.

-'l.his invention relates to the means employed for securing together the ca and the shell of an electric lamp socket casing.

It is very desirable to construct the means for fastening the shell and cap of such an article so that these parts may be quickl put together in such manner that they wi 1 not accidentally become disconnected, but may be easily separated when desired." It is also desirable that the construction be such that the connection may be quickly and iirmly made regardless of the rotary relation of the cap and shell in order that the key, if it is a key socket, may project in the necessary position with respect to the husk or other fixture trimming with which the socket may be used.

The object of the invention is to provide a socket with a. very simple and cheap means for quickly and rmly fastening together the shell and cap at any desired rotary adj ustment with relation to each other.

Figure l .of the accompanying drawings shows on enlarged scale a side view of a socket which embodies the invention. Fig. 2 shows a central section of the cap. Fig. 3 shows a side view of the upper end of the shell. Fig. '4 shows a side view of the fastening ring which is located in the cap. Fig. 5 shows a section of a part of the cap, rin and shell, illustrating the manner in whlch the fastening parts engage when put 1 together.

The shell 1 of common shape is preferably formed of thin brass or other suitable metal in the ordinary way. This shell may have the usual slot 2 for the iassage of the ke stem. Near the upper e go and desirab y adjacent to the slot, the shell is punched so as to form two outwardly projecting angular tongues 3. 'Diamctrically opposite the shell is punched in a similar manner to form corresponding tongues.

The cap 4 is preferabl formed 'of the same thin metal as the she l, in the common way, and at the top has the usual threadedhub 5 for attachment to the stem ofthe fixture or the end of the circuit Wire conduit. The lower edgeof the cap (3 is shaped to closely fit the upper end of the shell. Above this edge the ca is provided with an annular recess 7. in t llS recess is placed a ring 8. This rin may be split so that it may be contractor and allowed to expand into the recess, in which case it is desirable at intervals to punch in sections of the metal arount' the upper edge of the enlarged portion of the cap, as at so as to prevent the ring from springing out of position. The ring may have notches .l()-in its edge for re ceiving the indented portions of the cap, and when the ring is thus formed, it is held from turning around and springing out, by the staked points of the shell. The ring may be made in one piece, and after being 'located, the lower edge of the cap may be spun into the shape shown to hold the ring in placef The ring has perforations 11 at short intervals from each other. These perforations are preferably rectangular, although they might be of other shape.

In orderto put the parts together, the uper end of the shell is sim ly thrust into the ower edge of the cap until the tongues that are punched out from the shell spring into openings in the ring that is fastened in the cap. As the openings in the ring extend mits the parts to be engaged with the shell .turned rotarily to any position which is desired, with relation to the cap. As the result of this the rotary position of the shell, and consequently the location of the socket key may be adjusted to any necessary point.

This fastening meansv holds the shell and cap together very firmly. The parts cannot be disconnected until the part of the shell adjacent to the slot is pressed in and the tongues withdrawn from the openings in the ring.- This releasesthe shell so that it may be removed from the cap.

This fastening means is very cheap to manufacture, it is simple to operate, and'it holds the'parts together in any desired relation very firmly.

The invention claimed is:

1. A socket'having a shell with outwardl projecting tongues, a cap fitting said shell;

and a perforated split ring located in the cap, said ton es being adapted to enter openings in said ring when the shell and cap are put together.

5 2. A socket having a shell with outwardly projecting tongues, a cap fitting said shell, a perforated split ring located in the cap, and depressions from said cap retaining the ring-in position, said tongues being adapted v 10 to enter openings in said ring when the shell and cap are put together.

3, A socket having a shell with outwardly projecting tongues, a cap fitting said shell, a split ring located in a recess in the cap, said rlng having openings in its side and notches in its edge, and depressions from the cap entering said notches and holding the rlng agalnst mdvement, said tongues being adapted to enter openings in said ring when the shell and cap are put together.

' JOHANN G. PETERSON.

Witnesses:

JOSEPHINE M. STREMPFER, HARRY R. WILLIAMS. 

